Take a look at the weird and the wonderful things that lie beneath our feet as well as pictures of people waiting to use an underground subway for the first time as we delve deep and explore Sheffield's subterranean past.
Want more Sheffield retro? Fargate through the decades, Construction pics of the Winter Gardens
17. Inside the catacomb
Constuction workers getting the gatehouse to the General Cemetery ready for its opening in 2012. Bricklayer John Shultz pointing inside the catacomb underneath the gatehouse. Photo: ©Sheffield Newspapers Ltd
18. Centuries old mystery
A university is trying to help unravel a centuries-old mystery after it was revealed 15 bodies have disappeared from the burial crypt of an important family - including three Earls of Shrewsbury. Workmen at Sheffield Cathedral discovered the historical mystery when they stumbled across the entrance to Shrewsbury tomb - only to find just two coffins inside. At least 17 members of the Shrewsbury family, who were the Lords of Sheffield Manor for generations, were laid to rest beneath the 500-year-old chapel and are now missing. Canon Simon Cowling looks down into the crypt which has been discovered at Sheffield Cathedral in 2013. Photo: STEVE TAYLOR
19. Furnival Street new footbridge
Furnival Street new footbridge under construction in 1966. This has been well-used throughout the decades as it connects shoppers between key retail hubs in the city centre. Photo: staff
20. Subway opening
Charter Square subway opening in 1966. The area has undergone a huge multi-million pound transformation in recent years to link the city centre to The Moor shopping hub. Photo: staff